I have a Giottos head and an RC2 qr, but the QR wont fit on the head because of these two lumps, the easiest way to get this to work in my mind would be a sort of adapter washer which would receive the Giottos teeth and give the manfrotto one so it all locks in nicely.. but the question is do these exist?
https://dl.dropbox.com/u/19631605/Forum Set/Product/QR/DSC_0033.JPG
https://dl.dropbox.com/u/19631605/Forum Set/Product/QR/DSC_0035.JPG
https://dl.dropbox.com/u/19631605/Forum Set/Product/QR/DSC_0033.JPG
https://dl.dropbox.com/u/19631605/Forum Set/Product/QR/DSC_0035.JPG